老马识途（老馬識途）　

◎ 老马识途 lǎomǎ-shítú

[an experienced man knows the ropes;knowledge of a veteran; an old hand is a good guid as an old horse knows the way; the devil knows many things because he is old] 比喻富于经验堪为先导

老马识途添病骨,穷猿投树择深枝。——清· 黄景仁《两当轩集》